From cf1ae4345b4d7ef4bb8f60f98cc26633f8a18a6d Mon Sep 17 00:00:00 2001
From: Dave Stevenson <dave.stevenson@raspberrypi.org>
Date: Fri, 6 Sep 2019 15:04:51 +0100
Subject: [PATCH] v4l2: Add a Greyworld AWB mode.

Adds a simple greyworld white balance preset, mainly for use
with cameras without an IR filter (eg Raspberry Pi NoIR)

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
---
 include/uapi/linux/v4l2-controls.h | 1 +
 1 file changed, 1 insertion(+)

--- a/include/uapi/linux/v4l2-controls.h
+++ b/include/uapi/linux/v4l2-controls.h
@@ -950,6 +950,7 @@ enum v4l2_auto_n_preset_white_balance {
 	V4L2_WHITE_BALANCE_FLASH		= 7,
 	V4L2_WHITE_BALANCE_CLOUDY		= 8,
 	V4L2_WHITE_BALANCE_SHADE		= 9,
+	V4L2_WHITE_BALANCE_GREYWORLD		= 10,
 };
 
 #define V4L2_CID_WIDE_DYNAMIC_RANGE		(V4L2_CID_CAMERA_CLASS_BASE+21)
